Introduction and Uses of Anemometers
It is the most common type of anemometer. The rotating cup anemometer was first invented by Robinson Crusoe in the UK, initially with four cups, but later switched to three cups. Three parabolic or hemispherical empty cups fixed to each other on the frame are aligned, and the entire frame, along with the air cup, is mounted on a freely rotatable shaft. Under the action of wind, the wind cup rotates around its axis, and its speed is proportional to the wind speed. The speed can be recorded using electrical contacts, tachometers, or photoelectric counters.
propeller type
It is an anemometer with a set of three or four bladed propellers rotating around a horizontal axis. The propeller is installed at the front of a wind vane, so that its rotating plane is always facing the wind
Anemometer direction, its rotational speed is proportional to the wind speed.
Digital anemometer
Digital anemometer is a large-scale intelligent wind speed sensing and alarm device developed specifically for various large mechanical equipment. It adopts advanced digital anemometers internally
The microprocessor serves as the control core, and advanced digital communication technology is used in the periphery. The system has high stability, strong anti-interference ability, high detection accuracy, and the wind cup is made of special materials with high mechanical strength and strong wind resistance. The display case design is novel and unique, sturdy and durable, and easy to install and use. All electrical interfaces comply with international standards, require no debugging during installation, and are suitable for different working environments.
Digital anemometer is used to measure instantaneous wind speed and average wind speed, with functions such as automatic monitoring, real-time display, and over limit alarm control
Acoustic anemometer
The wind speed component in the direction of sound wave propagation will increase (or decrease) the speed of sound wave propagation, and acoustic anemometers made using this characteristic can be used to measure the wind speed component. The acoustic anemometer has at least two pairs of sensing elements, each pair including a speaker and a receiver. Make the sound waves of two speakers propagate in opposite directions. If one set of sound waves propagates along the wind speed component and the other set propagates against the wind, the time difference between the two receivers receiving the sound pulse will be proportional to the wind speed component. If two pairs of components are installed in both horizontal and vertical directions, the horizontal wind speed, wind direction, and vertical wind speed can be calculated separately. Due to the advantages of anti-interference and good directionality of ultrasound, the frequency of sound waves emitted by acoustic anemometers is mostly in the ultrasound band.
